SYMPTOMS OF WORN ENGINE MAIN BEARINGS

Автокөліктер мен көлік құралдары

In this topic I discuss the symptoms of worn engine main bearings. I also explain what cause main bearings to go bad and fail and how it can be prevented. If you're hearing noise from the bottom end of the engine it could be a sign the crankshaft bearings are on its way out. A failed bearing can cause engine to seize.
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Пікірлер: 43

  • @joeaboko807
    @joeaboko80711 ай бұрын

    This video needs more like because teaching knowledge is not free

  • @velox731
    @velox73111 ай бұрын

    Valuable information! Key point: Change your oil on time.

  • @johnxmackenzie
    @johnxmackenzie6 ай бұрын

    Legend! I pray i can replace the crank and bearings rather than replacing the whole engine. 2015 Golf R! 😢

  • @NightWolve75
    @NightWolve75Ай бұрын

    You were the only mechanic that helped me diagnose my Toyota engine's vibration problem when coming to a stop! Needed total main/piston rod bearing replacement!! Thanks so much! ❤

  • @cy-villian
    @cy-villian6 ай бұрын

    Thanks for that. Very clear explanation. Appreciated.

  • @davekhai2723
    @davekhai272316 сағат бұрын

    Thank you for sharing valuable knowledge

  • @brianvickery6202
    @brianvickery620211 ай бұрын

    Another great video thanks for sharing.

  • @damiropadobarglumskiperiod505
    @damiropadobarglumskiperiod5057 ай бұрын

    Awesome explanation.thank so much

  • @damiropadobarglumskiperiod505

    @damiropadobarglumskiperiod505

    7 ай бұрын

    I have certain sound that goes away when engine is idle .and increases with high arp specialy in low gear and uphil.can it be the the bearings

  • @freddyalfarodavilla2463
    @freddyalfarodavilla24633 ай бұрын

    amazing video

  • @vincentolsen1668
    @vincentolsen16683 ай бұрын

    Daer SIR I am from suif African 🇿🇦 I ryfe a Geely LC 1.3 tween came.i need to thank you for your video.quisten what' happen if oil WHAS lowe (oil lit came on) and then

  • @madkoolieindi
    @madkoolieindi3 ай бұрын

    I have a a issue with corolla 2zrfe engine when I start in the morning in Canada it’s start with a sound like belt are pulley I change the belt but still have the sound but as soon as it warm up it’s ok

  • @Youngwolf3459
    @Youngwolf34593 ай бұрын

    Wow you are amazing my friend. This video is very informative. Thank you so much for explaining.

  • @isaacgarza1069
    @isaacgarza10693 ай бұрын

    Metal shavings could be rod bearings also

  • @chriscarey1291
    @chriscarey129122 күн бұрын

    I have a 1974 carb-converted Porsche 914-4 that came to me with grossly contaminated engine oil; the drained oil looked had a white 'mocha' coffee appearance when I removed it...evidence to me that some unknowing person had perhaps pressure-washed the engine bay and the dual Weber carbs entrained water into the oil sump. The engine has a low sort of variable 'rumbling/grinding' sound that suggests to me that it may have sustained main engine bearing damage from being run with that contaminated oil. Does this sound like a reasonable hypothesis? Is it possible to accurately confirm or rule-out main bearing damage other than a tear-down for direct inspection, if there doesn't appear to be any metal shavings in the oil and the oil pressure seems to be within normal limits? A 914 engine main bearing replacement procedure would be EXPEN$IVE, needless to say... Thanks. Excellent instructional video, by the way!

  • @juharuotsalainen6938
    @juharuotsalainen69385 ай бұрын

    When is crankshaft polishing appropriate? is it every time you replace the bearings or only when you can see and feel scratches on your nails and fingers or no shine at all? isn't the smoothness and relatively smoothness the most important thing?

  • @sivucit
    @sivucit7 ай бұрын

    just subsribed. how do i tell if knok is because of rod or main bearing ?..

  • @carlodonnell146
    @carlodonnell1468 ай бұрын

    If 20w 50 is being used with old bearings....and then the bearings are replaced should I go back with 10w 40 or 30 with the new bearings? Would 20w50 cause a circulation problem if an engine has new bearings?

  • @phillipforbes1173
    @phillipforbes1173Ай бұрын

    If diesel fuel is going down into the oil pan, caused by fuel injector problems, how long does it take before you can lose the engine ?

  • @joshreynolds729
    @joshreynolds72911 ай бұрын

    Good video man. So what is advised to use to check clearance of the bearings, plastiguage reassembled and torque to spec then recheck? Or is there a more precise way? How to find the tolerances for a vehicle or tq specs to do this process? And on say performance engines do these tolerances need to be changed if say you add about 400 whp more than it already has over stock? Sorry for the many questions but seems like you know what your talking about.

  • @Top5AutoRepairs

    @Top5AutoRepairs

    11 ай бұрын

    For procedure and spec I use All Data.

  • @joshreynolds729

    @joshreynolds729

    11 ай бұрын

    @@Top5AutoRepairs Thank you. Would you know if they have 2016 dodge hellcat specs. And is that like a monthly subscription. Your probably a mechanic so you probably have it at work.

  • @kamranmarwat3776
    @kamranmarwat37765 ай бұрын

    Hy ,i have low oil light on idle only when the engine becomes hot after sometimes it goes off , is this main bearing problem?

  • @kellyjohna
    @kellyjohnaАй бұрын

    I'm rebuilding motorcycle engine. The crank bearings have colors but bottom crank bearings are black and top are blue ? Shouldn't the colors match on bottom and top crank bearings ?

  • @user-jn8ej4kf3l
    @user-jn8ej4kf3l4 ай бұрын

    we are 20 years professional engine parts OEM manufacturer.Our quality is high and stable.

  • @Rawrkee
    @Rawrkee9 ай бұрын

    Thanks for this video! What grit sand paper do you recommend using on the crankshaft journals?

  • @Top5AutoRepairs

    @Top5AutoRepairs

    9 ай бұрын

    600-1,000. Super fine or ultra fine.

  • @jeremyjones8872

    @jeremyjones8872

    Күн бұрын

    ​@@Top5AutoRepairsThank you for your videos,.question,ive been trying to figure out my oil pressure issue on 07silverado,3mechanics later and over $1k i didnt know until watchn you.but can my bearings be issue if NO NOISE but round shavings in pan and no oil pressure after 5mins running?? Any info greatly appreciated

  • @ishwariametoo7336
    @ishwariametoo733610 ай бұрын

    Hi why or what cause my crankshaft to bind when i thighten the connecting rid on the journal. It werent spin by hand or even using a rachet

  • @zakiramjan9822

    @zakiramjan9822

    2 ай бұрын

    Bearings clearances are too tight

  • @mr.hernandezdrives
    @mr.hernandezdrives11 ай бұрын

    great video sir, scary topic do you believe an oil test can help tou judge the health of my engine, what results am i looking for?

  • @johndelong5574

    @johndelong5574

    11 ай бұрын

    Examine oil and filter paper for tiny shiny or grayish particles. Use a magnet to find steel

  • @Top5AutoRepairs

    @Top5AutoRepairs

    11 ай бұрын

    Yes oil pressure test

  • @tirnistirnis9009
    @tirnistirnis900910 ай бұрын

    Hey, i wanted to ask. I got aluminium in my oil filter only. I went to change rod bearings and found that they look like brand new. There also was no metal in oil or pan, only in oil filter. Is it likely my oil pump is giving up? It looks scored. I didnt check main bearings tho, but when rod bearings looks good, mains should be good too as rod gets oil from main, right?

  • @icecolddrone267

    @icecolddrone267

    9 ай бұрын

    Could be a actuator that broke.

  • @user-wm3fc1sk1p
    @user-wm3fc1sk1p3 ай бұрын

    My dad thinks he can drive with bad main bearings forever😡 He won't let me take the engine out of the car for a full rebuild😡 I took the oil pan off and the connecting rod bearings just have minor stuff from recirculating shavings from the mains but they are definitely not the source of the knock.

  • @jasontrammell4674
    @jasontrammell46748 ай бұрын

    Hey none of these symptoms just hear a whining and car dies? Opinions

  • @pietjan2650
    @pietjan265010 ай бұрын

    Ive rebuild 1980s dirt bike engines and wear on transmission shafts from bearing was severe therefore i dont buy high milage cars. Engine wear down

  • @christinad3425
    @christinad342510 ай бұрын

    Can I access main bearings from under the car? i have a Mazda CX5

  • @blazem2400

    @blazem2400

    2 ай бұрын

    It would be hard because it’s upside down

  • @mokhtarbachir3601
    @mokhtarbachir360113 күн бұрын

    Hello, nobody talks about the main and rod bolts ? Reusable or not ?

  • @Top5AutoRepairs

    @Top5AutoRepairs

    13 күн бұрын

    Reusable as long the engine did not overheat

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